CHAPTER - 11
WORK AND ENERGY
CLASS :- IX
SUBJECT :- SCIENCE
, 1) Work :-
Work is said to be done when a force acts on an object
and the object is displaced in the direction of force.
The work done on an object is the product of the force
applied and the displacement.
Work done = force x displacement
W=FXs
The unit of work is joule (J).
If F is 1 Newton and displacement is 1 metre then the
work done is 1Nm or 1 joule (J).
So 1 joule is the amount of work done when a force of I
Newton displaces an object by 1 metre.
Eg :- If a force of 5 N acts on an object is displaced
through 2 m in the direction of force, then work done is
5 N x 2 m = 10 Nm or 10 J
WORK AND ENERGY
CLASS :- IX
SUBJECT :- SCIENCE
, 1) Work :-
Work is said to be done when a force acts on an object
and the object is displaced in the direction of force.
The work done on an object is the product of the force
applied and the displacement.
Work done = force x displacement
W=FXs
The unit of work is joule (J).
If F is 1 Newton and displacement is 1 metre then the
work done is 1Nm or 1 joule (J).
So 1 joule is the amount of work done when a force of I
Newton displaces an object by 1 metre.
Eg :- If a force of 5 N acts on an object is displaced
through 2 m in the direction of force, then work done is
5 N x 2 m = 10 Nm or 10 J
